body{
  text-align: center;
}
.button{
  margin: 10px;
}
.overlayContents{
  color: darkblue;
  background-color:darkorange;
  border-radius: 15px;
  height:100%;
}
#targetElement {
  margin-top: 40px;
  display: inline-block;
  width: 80%;
  height: 170px;
  border-style: solid;
  background-color: lightgreen;
}